Motorcycle Starter Rotor Assy compatible with ATP500 Norwegian BIG BOSS Scrambler 500 6X6 PPS 400/500 SERIES 11 10.This starter rotor assembly is designed for direct fitment on specified models.It functions as part of the engine's starting system, providing engagement during ignition.The unit is constructed to meet specifications for durability and performance.Installation requires standard mechanical tools and knowledge.proper alignment and torque when replacing the starter rotor. Disclaimer of Affiliation: This is an aftermarket component.Brand and model mentions are for illustrative compatibility only.